2 kW average power from a pulsed Yb-doped rod-type fiber amplifier
This Letter reports on a fiber-laser system that, employing a 1 m long rod-type photonic-crystal fiber as its main-amplifier, emits a record average output power of 2 kW, by amplifying stretched ps-pulses. A further increase of the output power was only limited by the available laser-diode pump powe...
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Veröffentlicht in: | Optics letters 2014-11, Vol.39 (22), p.6446-6449 |
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creator | Otto, Hans-Jürgen Stutzki, Fabian Modsching, Norbert Jauregui, Cesar Limpert, Jens Tünnermann, Andreas |
description | This Letter reports on a fiber-laser system that, employing a 1 m long rod-type photonic-crystal fiber as its main-amplifier, emits a record average output power of 2 kW, by amplifying stretched ps-pulses. A further increase of the output power was only limited by the available laser-diode pump power. The energy of the pulses is 100 μJ, corresponding to MW-level peak powers extracted directly from the fiber of the main amplifier. The corresponding M2 at the maximum output power is |
doi_str_mv | 10.1364/OL.39.006446 |
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A further increase of the output power was only limited by the available laser-diode pump power. The energy of the pulses is 100 μJ, corresponding to MW-level peak powers extracted directly from the fiber of the main amplifier. The corresponding M2 at the maximum output power is <3, due to the onset of mode instabilities. The Letter covers the influence of this effect on the evolution of the beam quality with the output power. 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title | 2 kW average power from a pulsed Yb-doped rod-type fiber amplifier |
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